László Bíró

László Bíró was a Hungarian-Argentine inventor best known for creating the modern ballpoint pen. Frustrated with messy, leaking ink from traditional pens, he developed a reusable pen that used quick-drying, oil-based ink in a tiny ball that rolled smoothly, providing a cleaner, more reliable writing experience. Bíró's innovation revolutionized writing instruments and became popular worldwide. His invention combined practical engineering with everyday utility, making writing more convenient and efficient for millions of people.